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   <div id="projectname">Tekdaqc Firmware
   &#160;<span id="projectnumber">1.0.2.0</span>
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   <div id="projectbrief">The firmware of the Tekdaqc.</div>
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<div class="title">ADS1256_SPI_Controller.h</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright 2013 Tenkiv, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Licensed under the Apache License, Version 2.0 (the &quot;License&quot;); you may not use this file except in compliance with</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * the License. You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * an &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * specific language governing permissions and limitations under the License.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> * @file ADS1256_SPI_Controller.h</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> * @brief Header file for the ADS1256 SPI driver.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * Deals with low level communication with ADS1256 ADC via SPI.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> * @author Jared Woolston (jwoolston@tenkiv.com)</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * @since v1.0.0.0</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment">/* Define to prevent recursive inclusion -------------------------------------*/</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#ifndef ADS1256_SPI_CONTROLLER_H_</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define ADS1256_SPI_CONTROLLER_H_</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment">/* Define to provide proper behavior with C++ compilers ----------------------*/</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor"></span>   </div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment">/* INCLUDES */</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#include &quot;stm32f4xx.h&quot;</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#include &quot;stm32f4xx_gpio.h&quot;</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="_tekdaqc___debug_8h.html">Tekdaqc_Debug.h</a>&quot;</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">/* EXPORTED CONSTANTS */</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;  </div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment"> * @def ADS1256_CS_LOW()</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment"> * @brief Select ADS1256: Chip Select pin low</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment"> * */</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="preprocessor">#define ADS1256_CS_LOW()       (GPIO_ResetBits(ADS1256_CS_GPIO_PORT, ADS1256_CS_PIN))</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="group__ads1256__driver.html#ga0c9c039ac03ad1280102b1f05c056071">   63</a></span>&#160;<span class="preprocessor">#define ADS1256_CS_HIGH()      (GPIO_SetBits(ADS1256_CS_GPIO_PORT, ADS1256_CS_PIN))</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment">/* INITIALIZATION METHODS */</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment"> * @brief Initialize the ADS1256 connection</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__ads1256__driver.html#gaf09ce69ea32ea967d008d0a465929820">ADS1256_SPI_Init</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment"> * @brief De-initialize the ADS1256 connection</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="keywordtype">void</span> ADS1256_SPI_DeInit(<span class="keywordtype">void</span>);  </div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment">/* PIN CONTROL METHODS */</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment"> * @brief Switch the SPI clock pin to GPIO control.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__ads1256__driver.html#ga3a68db63bde582e77d1cad0e86e07922">ADS1256_CLK_To_GPIO</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__ads1256__driver.html#ga631498cd1b9e0302c8ceec6ad3094e03">ADS1256_GPIO_To_CLK</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="comment">/* COMMUNICATION METHODS */</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment">/*--------------------------------------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment"> * @brief Send a byte over the SPI line.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;uint8_t <a class="code" href="group__ads1256__driver.html#ga81371e39460504d1badd6291ef5ba2f7">ADS1256_SendByte</a>(uint8_t data);</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__ads1256__driver.html#ga0eecf15939442deb9f23a1f9758539f9">ADS1256_SendBytes</a>(uint8_t* data, uint8_t n);</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;uint8_t <a class="code" href="group__ads1256__driver.html#gaaf7d951b7d407997f2c6bee84932c883">ADS1256_ReceiveByte</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__ads1256__driver.html#gadadfc4d298fad4e9833975340b7eeaae">ADS1256_ReceiveBytes</a>(uint8_t* data, uint8_t n);</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="preprocessor"></span>}</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* ADS1256_SPI_CONTROLLER_H_ */</span><span class="preprocessor"></span></div>
<div class="ttc" id="group__ads1256__driver_html_gadadfc4d298fad4e9833975340b7eeaae"><div class="ttname"><a href="group__ads1256__driver.html#gadadfc4d298fad4e9833975340b7eeaae">ADS1256_ReceiveBytes</a></div><div class="ttdeci">void ADS1256_ReceiveBytes(uint8_t *data, uint8_t n)</div><div class="ttdoc">Receive an array of bytes over the SPI line. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_s1256___s_p_i___controller_8c_source.html#l00308">ADS1256_SPI_Controller.c:308</a></div></div>
<div class="ttc" id="group__ads1256__driver_html_ga0eecf15939442deb9f23a1f9758539f9"><div class="ttname"><a href="group__ads1256__driver.html#ga0eecf15939442deb9f23a1f9758539f9">ADS1256_SendBytes</a></div><div class="ttdeci">void ADS1256_SendBytes(uint8_t *data, uint8_t n)</div><div class="ttdoc">Send an array of bytes over the SPI line. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_s1256___s_p_i___controller_8c_source.html#l00279">ADS1256_SPI_Controller.c:279</a></div></div>
<div class="ttc" id="group__ads1256__driver_html_gaf09ce69ea32ea967d008d0a465929820"><div class="ttname"><a href="group__ads1256__driver.html#gaf09ce69ea32ea967d008d0a465929820">ADS1256_SPI_Init</a></div><div class="ttdeci">void ADS1256_SPI_Init(void)</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_s1256___s_p_i___controller_8c_source.html#l00150">ADS1256_SPI_Controller.c:150</a></div></div>
<div class="ttc" id="_tekdaqc___debug_8h_html"><div class="ttname"><a href="_tekdaqc___debug_8h.html">Tekdaqc_Debug.h</a></div><div class="ttdoc">Header file to define precompiler variables for debugging sections of code. </div></div>
<div class="ttc" id="group__ads1256__driver_html_ga631498cd1b9e0302c8ceec6ad3094e03"><div class="ttname"><a href="group__ads1256__driver.html#ga631498cd1b9e0302c8ceec6ad3094e03">ADS1256_GPIO_To_CLK</a></div><div class="ttdeci">void ADS1256_GPIO_To_CLK(void)</div><div class="ttdoc">Switch the SPI clock pin to SPI control. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_s1256___s_p_i___controller_8c_source.html#l00221">ADS1256_SPI_Controller.c:221</a></div></div>
<div class="ttc" id="group__ads1256__driver_html_ga81371e39460504d1badd6291ef5ba2f7"><div class="ttname"><a href="group__ads1256__driver.html#ga81371e39460504d1badd6291ef5ba2f7">ADS1256_SendByte</a></div><div class="ttdeci">uint8_t ADS1256_SendByte(uint8_t data)</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_s1256___s_p_i___controller_8c_source.html#l00255">ADS1256_SPI_Controller.c:255</a></div></div>
<div class="ttc" id="group__ads1256__driver_html_ga3a68db63bde582e77d1cad0e86e07922"><div class="ttname"><a href="group__ads1256__driver.html#ga3a68db63bde582e77d1cad0e86e07922">ADS1256_CLK_To_GPIO</a></div><div class="ttdeci">void ADS1256_CLK_To_GPIO(void)</div><div class="ttdef"><b>Definition:</b> <a href="_a_d_s1256___s_p_i___controller_8c_source.html#l00200">ADS1256_SPI_Controller.c:200</a></div></div>
<div class="ttc" id="group__ads1256__driver_html_gaaf7d951b7d407997f2c6bee84932c883"><div class="ttname"><a href="group__ads1256__driver.html#gaaf7d951b7d407997f2c6bee84932c883">ADS1256_ReceiveByte</a></div><div class="ttdeci">uint8_t ADS1256_ReceiveByte(void)</div><div class="ttdoc">Receive a byte over the SPI line. </div><div class="ttdef"><b>Definition:</b> <a href="_a_d_s1256___s_p_i___controller_8c_source.html#l00294">ADS1256_SPI_Controller.c:294</a></div></div>
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